About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
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Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
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Presentation Title |
Powder Design for Additive Manufacturing of Porous Metals |
Author(s) |
Braden Jones, Mark Atwater |
On-Site Speaker (Planned) |
Braden Jones |
Abstract Scope |
Indirect synthesis of advanced alloy powders for additive manufacturing allows greater flexibility to tailor powder composition and morphology, and solid-state sintering processes are of great value in nonequilibrium alloys where melt-processing reverses the unique microstructure. This work combines discrete element method simulation and experimental validation to convert powders from an irregular morphology to high sphericity via ball milling. The prototypical test case is a copper metal matrix composite that is converted to a porous copper matrix on reduction and sintering. It has been initially demonstrated in binder jet additive manufacturing and is being extended to metal extrusion additive manufacturing, which is expected to be more suitable for a wide range of alloys. The microporous to nanoporous copper has a variety of applications including thermal transport, catalytic processing, and electrical applications. The general concepts, prior work in traditional powder metallurgy, and specific applications of additive processing will be discussed. |